Forged racing piston for standard bore GX390 88mm downsized tool
steel wrist pin to .630" diameter and raised to accomodate new longer
billet rod.  Notice valve reliefs pre-cut in piston in proper location.  
Piston kit includes forged piston, tool steel wrist pin, piston ring set and
Piston is 35% lighter than stock & wrist pin is 30% lighter than
Competition exhaust systems, pipes and
mufflers available for the Big Block
$74.95 includes brace.
Hard welded lobe race cams available for the
Big Block Clones. This proprietary grind did
not just fall off the turnip truck. Extensive
dyno and on track testing has proven this to
be the winning profile.  
This dual combo clearly shows the new longer billet rod (4.842) &
raised wrist pin forged piston in comparison to cast aluminum units.  
Bolt-in horsepower and reliability.
Fits perfectly on your GX390 Clone Blower
Housing. Solid screen for those wanting more
heat in the engine.  Vented Screens for those
wanting to run a cooler engine.
Vented- Out Of Stock
Stainless Valves from Stock Clone to
Huge Jr Dragster valves.  Prices range
$16.00 - $23.50 per valve.
New GX390 Billet Intake Manifold
with hardware.  Fits the Tillotson
HR Series & the HW Avenger
Clements Racing Products
GX390 Dual Valve Spring Kit
Billet 'H' Beam Rods in stock for your GX-390 Clone Engines.

Standard, 4.423" - $149.95
Long,       4.842"-  $169.95
includes bearing
4.423" Out Of Stock